Help on mapping problem

Question

Hi All
I have the following challenge
I have to map one field once for the header and as many times as it occurs for the item
This is the source structure
<segmen20>
<segmen24>
<belnr>10</belnr>
</segmen24>
<segmen24>
<belnr>10</belnr>
</segmen24>
<segmen24>
<belnr>10</belnr>
</segmen24>
</segmen20>
<segmen20>
<segmen24>
<belnr>20</belnr>
</segmen24>
<segmen24>
<belnr>20</belnr>
</segmen24>
<segmen24>
<belnr>20</belnr>
</segmen24>
</segmen20>
I have to map the field belnr once for the header and as many times as it occurs for the Item
like this
belnr 10 should be mapped once for the header and 3 times for the item
<Header>
<poheader>10</poheader>
</Header>
<Item>
<poitem>10</poitem>
</Item>
<Item>
<poitem>10</poitem>
</Item>
<Item>
<poitem>10</poitem>
</Item>
and belnr 20   the same
<Header>
<poheader>20</poheader>
</Header>
<Item>
<poitem>20</poitem>
</Item>
<Item>
<poitem>20</poitem>
</Item>
<Item>
<poitem>20</poitem>
</Item>
any help kindelly
Thanks

Answer 1

each target field mapping starts with the same sequence until *,
if you have PI 7.1, then you can just continue from the * and add all sequences to the targets,
In PI 7.0 or below, you can copy this sequence for every target.
for example:
belnr - removecontext - spltbyvalue(value changed) -  collapse context - <Header>
If you have a parent tag order, then you do it like this:
belnr - removecontext - spltbyvalue(value changed) - (*)
(*) - collapse context - <Order>
(*) - collapse context - splitByValue(value changed) - <poheader>
(*) - <Item>
belnr -  poitem>
constant("") - header
Sorry, I gut some errors in the first approach.
This pattern is very important, I use this in almost every mapping: flat file -> Idoc